Libreoffice (and NeoOffice and Open Office) crash

After upgrading to Lion (10.7.2) LibreOffice 3.4.5 crashes frequently. It is quite unpredictable, it happens with both spreadsheets and docs. Switching to NeoOffice or OpenOffice doesn't help. It usually happens doing something a little more complicated than just typing, but sometimes it happens even when I do nothing. The crash means that LibreOffice quits and an error screen appears saying: LibreOffice quitted unexpectedly. The crash report can be found here.

It's very annoying and seriously obstructs my working. I do considering buying Office for Mac to get rid of this problem, but I hope anyone van help me.